LoFP LoFP / legitimate import of keys

Techniques

Sample rules

Potential Suspicious Registry File Imported Via Reg.EXE

Description

Detects the import of ‘.reg’ files from suspicious paths using the ‘reg.exe’ utility

Detection logic

condition: all of selection_*
selection_cli:
  CommandLine|contains: ' import '
selection_img:
- Image|endswith: \reg.exe
- OriginalFileName: reg.exe
selection_paths:
  CommandLine|contains:
  - C:\Users\
  - '%temp%'
  - '%tmp%'
  - '%appdata%'
  - \AppData\Local\Temp\
  - C:\Windows\Temp\
  - C:\ProgramData\

Imports Registry Key From a File

Description

Detects the import of the specified file to the registry with regedit.exe.

Detection logic

condition: all of selection_* and not all of filter_*
filter_1:
  CommandLine|contains|windash:
  - ' -e '
  - ' -a '
  - ' -c '
filter_2:
  CommandLine|re: :[^ \\]
selection_cli:
  CommandLine|contains:
  - ' /i '
  - ' /s '
  - .reg
selection_img:
- Image|endswith: \regedit.exe
- OriginalFileName: REGEDIT.EXE